American business tycoon Robert Talbot (Hudson) maintains a holiday villa on the Italian Riveria. But the only time he uses the place is the month of September, so when Talbot arrives in July he discovers his enterprising major domo Maurice (Slezak) has been managing the place as a hotel the rest of the year. Talbot finds his home filled with tourists and, to make matters worse, discovers his Italian lover Lisa (Lollobrigida) about to get married. Darin and Dee are the film's romantic ingenues and wound up getting married after filming wrapped; his screen debut.